Home / 214,597,806.80-321,896,710.20-78,287,637.20

Finding the Fourth Proportional to 214,597,806.80, 321,896,710.20 and 78,287,637.20

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Solution

The fourth proportional to 214,597,806.80, 321,896,710.20 and 78,287,637.20 is: 117,431,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,597,806.80 : 321,896,710.20 = 78,287,637.20 : x
  2. Step 2: Convert to fraction form
    214,597,806.80/321,896,710.20 = 78,287,637.20/x
  3. Step 3: Cross multiply
    214,597,806.80x = 321,896,710.20 × 78,287,637.20
  4. Step 4: Simplify right side
    214,597,806.80x = 25,200,532,864,011,140
  5. Step 5: Solve for x
    x = 25,200,532,864,011,140/214,597,806.80
  6. Step 6: Final answer
    x = 117,431,455.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.